[OpenMP] support depend clause for taskwait directive, by Deepak

Eachempati.

This patch adds clang (parsing, sema, serialization, codegen) support for the 'depend' clause on the 'taskwait' directive.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D113540

1 files changed, 62 insertions, 0 deletions

diff --git a/clang/test/OpenMP/taskwait_depend_messages.cpp b/clang/test/OpenMP/taskwait_depend_messages.cpp
new file mode 100644
index 000000000000..40f8b5d0a9ab
--- /dev/null
+++ b/clang/test/OpenMP/taskwait_depend_messages.cpp
@@ -0,0 +1,62 @@
+// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=50 -ferror-limit 100 -o - -std=c++11 %s -Wuninitialized
+
+// RUN: %clang_cc1 -verify -fopenmp-simd -fopenmp-version=50 -ferror-limit 100 -o - -std=c++11 %s -Wuninitialized
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note {{declared here}}
+
+class vector {
+  public:
+    int operator[](int index) { return 0; }
+};
+
+int main(int argc, char **argv, char *env[]) {
+  vector vec;
+  typedef float V __attribute__((vector_size(16)));
+  V a;
+  auto arr = x; // expected-error {{use of undeclared identifier 'x'}}
+
+  #pragma omp taskwait depend // expected-error {{expected '(' after 'depend'}}
+  #pragma omp taskwait depend ( // expected-error {{expected depend modifier(iterator) or 'in', 'out', 'inout', 'mutexinoutset' or 'depobj' in OpenMP clause 'depend'}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-warning {{missing ':' after dependency type - ignoring}}
+  #pragma omp taskwait depend () // expected-error {{expected depend modifier(iterator) or 'in', 'out', 'inout', 'mutexinoutset' or 'depobj' in OpenMP clause 'depend'}} expected-warning {{missing ':' after dependency type - ignoring}}
+  #pragma omp taskwait depend (argc // expected-error {{expected depend modifier(iterator) or 'in', 'out', 'inout', 'mutexinoutset' or 'depobj' in OpenMP clause 'depend'}} expected-warning {{missing ':' after dependency type - ignoring}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (source : argc) // expected-error {{expected depend modifier(iterator) or 'in', 'out', 'inout', 'mutexinoutset' or 'depobj' in OpenMP clause 'depend'}}
+  #pragma omp taskwait depend (source) // expected-error {{expected expression}} expected-warning {{missing ':' after dependency type - ignoring}} expected-error {{expected depend modifier(iterator) or 'in', 'out', 'inout', 'mutexinoutset' or 'depobj' in OpenMP clause 'depend'}}
+  #pragma omp taskwait depend(mutexinoutset: argc) // expected-error{{'mutexinoutset' modifier not allowed in 'depend' clause on 'taskwait' directive}}
+  #pragma omp taskwait depend (in : argc)) // expected-warning {{extra tokens at the end of '#pragma omp taskwait' are ignored}}
+  #pragma omp taskwait depend (out: ) // expected-error {{expected expression}}
+  #pragma omp taskwait depend (inout : foobool(argc)), depend (in, argc) // expected-error {{expected addressable lvalue expression, array element, array section or array shaping expression}} expected-warning {{missing ':' after dependency type - ignoring}} expected-error {{expected expression}}
+
+  #pragma omp taskwait depend (out :S1) // expected-error {{'S1' does not refer to a value}}
+  #pragma omp taskwait depend(in : argv[1][1] = '2')
+  #pragma omp taskwait depend (in : vec[1]) // expected-error {{expected addressable lvalue expression, array element, array section or array shaping expression}}
+  #pragma omp taskwait depend (in : argv[0])
+  #pragma omp taskwait depend (in : ) // expected-error {{expected expression}}
+  #pragma omp taskwait depend (in : main)
+  #pragma omp taskwait depend(in : a[0]) // expected-error{{expected addressable lvalue expression, array element, array section or array shaping expression}}
+  #pragma omp taskwait depend (in : vec[1:2]) // expected-error {{ value is not an array or pointer}}
+  #pragma omp taskwait depend (in : argv[ // expected-error {{expected expression}} expected-error {{expected ']'}} expected-error {{expected ')'}} expected-note {{to match this '['}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (in : argv[: // expected-error {{expected expression}} expected-error {{expected ']'}} expected-error {{expected ')'}} expected-note {{to match this '['}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (in : argv[:] // expected-error {{section length is unspecified and cannot be inferred because subscripted value is not an array}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (in : argv[argc: // expected-error {{expected expression}} expected-error {{expected ']'}} expected-error {{expected ')'}} expected-note {{to match this '['}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (in : argv[argc:argc] // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp taskwait depend (in : argv[0:-1]) // expected-error {{section length is evaluated to a negative value -1}}
+  #pragma omp taskwait depend (in : argv[-1:0]) // expected-error {{zero-length array section is not allowed in 'depend' clause}}
+  #pragma omp taskwait depend (in : argv[:]) // expected-error {{section length is unspecified and cannot be inferred because subscripted value is not an array}}
+  #pragma omp taskwait depend (in : argv[3:4:1]) // expected-error {{expected ']'}} expected-note {{to match this '['}}
+  #pragma omp taskwait depend(in:a[0:1]) // expected-error {{subscripted value is not an array or pointer}}
+  #pragma omp taskwait depend(in:argv[argv[:2]:1]) // expected-error {{OpenMP array section is not allowed here}}
+  #pragma omp taskwait depend(in:argv[0:][:]) // expected-error {{section length is unspecified and cannot be inferred because subscripted value is not an array}}
+  #pragma omp taskwait depend(in:env[0:][:]) // expected-error {{section length is unspecified and cannot be inferred because subscripted value is an array of unknown bound}}
+  #pragma omp taskwait depend(in : argv[ : argc][1 : argc - 1])
+  #pragma omp taskwait depend(in : arr[0])
+  foo();
+
+  return 0;
+}